Washington Well Data › Island County › Oak Harbor (98278)
Oak Harbor, WA (98278): well depth, water level & drilling cost
✓ 279 Ecology records · Island County
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How deep are wells in and around Oak Harbor (98278), Washington?
The median drilled well depth in and around Oak Harbor (98278) is 158 ft, based on 279 wells with recorded depths in the state Ecology database. Half fall between 93 ft and 231 ft; 90% are shallower than 283 ft.
How much does it cost to drill a well in and around Oak Harbor (98278)?
Applying published per-foot rates to the local median depth of 158 ft: drilling and casing alone typically runs $3,950–$10,270; a complete system including pump, pressure tank, and hookup typically runs $9,480–$15,800. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in and around Oak Harbor (98278)?
The median static water level is 75 ft below ground surface (middle half of wells: 37 ft–154 ft), from 22 measurements.
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Part of Island County well records.
Method: medians computed from Ecology records (water wells only — soil/environmental borings and decommissions excluded; depths 0–5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.